#!/usr/bin/python
'''
drawf.c from the Redbook examples.
Converted to Python by Jason L. Petrone 7/00

/*
 * Copyright(c) 1993-1997, Silicon Graphics, Inc.
 * ALL RIGHTS RESERVED
 * Permission to use, copy, modify, and distribute this software for
 * any purpose and without fee is hereby granted, provided that the above
 * copyright notice appear in all copies and that both the copyright notice
 * and this permission notice appear in supporting documentation, and that
 * the name of Silicon Graphics, Inc. not be used in advertising
 * or publicity pertaining to distribution of the software without specific,
 * written prior permission.
 *
 * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
 * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON
 * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
 * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
 * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
 * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
 * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
 * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
 * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * US Government Users Restricted Rights
 * Use, duplication, or disclosure by the Government is subject to
 * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
 *(c)(1)(ii) of the Rights in Technical Data and Computer Software
 * clause at DFARS 252.227-7013 and/or in similar or successor
 * clauses in the FAR or the DOD or NASA FAR Supplement.
 * Unpublished-- rights reserved under the copyright laws of the
 * United States.  Contractor/manufacturer is Silicon Graphics,
 * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
 *
 * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
 */
'''

'''
/*
 *  drawf.c
 *  Draws the bitmapped letter F on the screen(several times).
 *  This demonstrates use of the glBitmap() call.
 */
'''

import struct

try:
    from OpenGL.GLUT import *
    from OpenGL.GL import *
except:
    print('''
ERROR: PyOpenGL not installed properly.
''')
    sys.exit()

rasterBytes = (
0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xff, 0x00, 0xff, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00,
0xff, 0xc0, 0xff, 0xc0)

rasters = ''
for byte in rasterBytes:
    rasters = rasters + struct.pack('B', byte)


def init():
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
    glClearColor(0.0, 0.0, 0.0, 0.0)


def display():
    print('display')
    glClear(GL_COLOR_BUFFER_BIT)
    glColor3f(1.0, 1.0, 1.0)
    glRasterPos2i(20, 20)
    print('beginning bitmaps')
    glBitmap(10, 12, 0.0, 0.0, 11.0, 0.0, rasters)
    glBitmap(10, 12, 0.0, 0.0, 11.0, 0.0, rasters)
    glBitmap(10, 12, 0.0, 0.0, 11.0, 0.0, rasters)
    print('flushing')
    glFlush()


def reshape(w, h):
    print('reshape')
    glViewport(0, 0, w, h)
    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    glOrtho(0, w, 0, h, -1.0, 1.0)
    glMatrixMode(GL_MODELVIEW)


def keyboard(key, x, y):
    print('keyboard', key, x, y)
    if key == chr(27):
        sys.exit()

# Main Loop
#  Open window with initial window size, title bar,
#  RGBA display mode, and handle input events.
if __name__ == "__main__":
    glutInit(sys.argv)
    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB)
    glutInitWindowSize(100, 100)
    glutInitWindowPosition(100, 100)
    glutCreateWindow('drawf')
    init()
    glutReshapeFunc(reshape)
    glutKeyboardFunc(keyboard)
    glutDisplayFunc(display)

    glutMainLoop()
